Prof. Dr. Heiko Lueken
RWTH Aachen
Institut für Anorganische Chemie
Landoltweg 1

D-52056 Aachen
Tel./ Fax: 0241-80-94648/92642
heiko.lueken@ac.rwth-aachen.de

Homepage

http://www.ssc.rwth-aachen.de/Ww/Lueken_homepage/

Methods

  • Syntheses
    • Organometallic: transition metal and lanthanide complexes
    • Intermetallic: ultralight lanthanide alloys
  • X-ray crystal structure investigation
  • Magnetic susceptibility measurements (SQUID-magnetometer; 2 - 800 K, 5 T, single crystal device)
  • Development and application of computer programs for the analysis of magnetic properties
    • Program CONDON (applicable to d, f, d-d, f-f, and d-S, f-S systems, consideration of interelectronic repulsion, spin-orbit coupling, ligand-field, interatomic spin-spin coupling, applied magnetic field) (ii) HTSE-package (HTSE: high-temperature series expansion; applicable to magnetically-condensed systems; consideration of up to three exchange pathways)
    • HTSE-package (HTSE: high-temperature series expansion; applicable to magnetically-condensed systems; consideration of up to three exchange pathways)
    • Development of models for anisotropic exchange

Projects in the SPP 1137

  • Synthesis, structure determination and magnetic properties of heterodinuclear molecules consisting of a lanthanide ion with large orbital contribution to the ligand-field ground state and exchange-coupled to a pure spin system